The news on Sunday that the Labour Party leader Jeremy Corbyn would support a second Brexit referendum if it was the wish of the membership could lead to the greatest political u-turn in modern day history. Corbyn, a eurosceptic at heart, is, of course, a reluctant convert. His changed mindset is more a reflection of the fact that as 13,000 Labour Party members descend on Liverpool for the party's annual conference the most recent poll carried out by YouGov shows 86% want a second referendum.